vdubpower

the other day i was in my car waiting for some poeple and was listening to the radio, usually when i open the door it turns off but i think when i went in for my meeting the radio stayed on, for about 2 hours

when i came back the electrics were still working but the car would not sstart...i was able to do a quick jump start and it started fine..no problems since

wondering if it was just from the radio ( if i actually did leave it on) or something else

ill check the battery with a volt meter later today

does warrenty cover batteries

Vrodman

I just replaced my battery through road side service for free. Got it done in my garage 1 month before factory warranty ended.

A volt meter wont tell you much about your battery condition. If you get a low voltage with just a volt meter your battery is shot for sure. Battery voltage needs to be checked under load. You likely just ran it down and you will be fine. But, you are at 3ish years, and depending on different factors yours could be on its way out.

I recommend the next time it needs a jump, you call road side service and hang out for a half an hour at the most. The MB dude will be there with a new battery for FREE!!!

Good Luck!

vdubpower

good idea....i pay for AAA too, maybe i dont need it

BrabusNYC

This happened to me a few weeks ago. Radio drained the battery car wouldnt start...after a jump it was fine.

otakki

These cars are electric hogs. Put them on a trickle charger like BatteryTender or BatteryMinder.

Davidkuo0330

Best time to get your monies worth for road side assistance and get a new battery. Our 2012 factory warranty is coming up soon and the battery is not cover under the EL warranty.

vdubpower

not covered under the EL? really i need to read that ....honestly didnt think batteries were included in the first place.

will they give me a battery if the car is working right now?

Vrodman

Battery is absolutely covered under 4year and either 40,000 or 50,000 miles. Don't recall.

Not covered under extended warranties for sure.

Also, battery needs to test as bad when a road side tech shows up. He will load test it. However, based on what I witnessed when he did mine, it was quick and hardly fully diagnostic. I sense if your car simply wont start and they come out, you will get a new battery. The dealership they work for makes money from the factory! Simple as that.

Good luck.

vdubpower

car working fine now..maybe next jan before 4 yrs runs oiut , ill leave radio on for a night and call them

Davidkuo0330

2012 E63 is NOT cover under the factory warranty.

Davidkuo0330

Sorry, battery is not cover the EL warranty, but it is cover the factory warranty.

vdubpower

Battery just died again. Waiting for Mercedes tech to call me. Hopefully will have new battery . hopefully that's the root of problem

Vrodman

Dont know where you are located, but here in San Jose, from the time I made the call to road side until the time the tech had the battery installed in my garage was less than one hour!

Let us know how it turns out.

Good Luck.

vdubpower

yeah , all was good, tech called got there in about 30 min, used 2 tools to determine that battery read 11volts and to replace it...so they took care of it...nice

2012 merc amg

Wow, hopefully my battery will die while the car is still under factory warrantee, guess I'll have to sit there and listen to the radio more with the car shut off.

KarlG

Glad to here of the new battery. I hope that is the fix you needed. If you were seeing 14V with the car running, you should be all fixed.

84gts

Had the same issue twice already. Listened for a radio with the engine off for like 10 minutes, then the car would not start.. Went away for two weeks, but the car started without a problem after I came back. Does it mean the radio/nav unit draws so much excessive voltage? My last batter on a lexus lasted for 9 years. This one is less than 5 years old but more than 4, so no free replacement for me.. I still need to test it at Autozone just make sure it is batery which is a culprit here..

Dabloke

I have a 2010 E 350, 78K. Every time I'm overseas, my wife has the battery die. I brought it to MB to check the charging system etc. and everything is fine. It just happened again with me home, (12th time?), so I put the battery on a trickle charge to make sure it was full. I pulled the cover over the battery after 2 hours because it was still drawing 2 amps, and found the AC fan still running! Something is not triggering the AC fan to shut off. I restarted the car, turned the AC off, and the fan stayed off when I shut it down. I then restarted and left the AC on; it turned off as it should. Anyone know what would randomly keep the AC blower motor indefinitely running with the car off, locked, and key not present?

unagi1

Secondary battery took a dump last week, just got it swapped out under warranty. Even more hilarious, the first secondary battery they gave me was no good either, QC hard at work

vdubpower

What was the symptom of the secondary battery going down

robl45

Once a battery drains to the point of jumping, you lose power from the battery. Its basically gone at that point. Car may start, but listen to the radio or leave the door open for 10 minutes and then it won't. Pretty much always best to get it replaced.

unagi1

Started a few months ago with the windows not rolling up all the way, almost as with an obstruction. Then, the pano roof would not one touch close either. In either case, holding down the button fixed the issue.

Then, got auxilliary battery malfunction on the dash and that took distronic and active lane assist away, so figured it was about time to head in.

vdubpower

Interesting. Good to know

PeterUbers

I want my battery to die too!!

unagi1

lol, why is that